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(a)Find the equation of the tangent line to the curve 8xy - 5x +7 y = 10(x-3y), at the point (2,-2). (b) Given that

(a)Find the equation of the tangent line to the curve 8xy - 5x +7 y = 10(x-3y), at the point (2,-2). (b) Given that f(x, y) = 6xy cosx + 5y siny + 10x? e-3x. find fxi fyy fry Jyx

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